1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2#ifndef FADVISE_H_INCLUDED
3#define FADVISE_H_INCLUDED
4
5#define POSIX_FADV_NORMAL 0 /* No further special treatment. */
6#define POSIX_FADV_RANDOM 1 /* Expect random page references. */
7#define POSIX_FADV_SEQUENTIAL 2 /* Expect sequential page references. */
8#define POSIX_FADV_WILLNEED 3 /* Will need these pages. */
9
10/*
11 * The advise values for POSIX_FADV_DONTNEED and POSIX_ADV_NOREUSE
12 * for s390-64 differ from the values for the rest of the world.
13 */
14#if defined(__s390x__)
15#define POSIX_FADV_DONTNEED 6 /* Don't need these pages. */
16#define POSIX_FADV_NOREUSE 7 /* Data will be accessed once. */
17#else
18#define POSIX_FADV_DONTNEED 4 /* Don't need these pages. */
19#define POSIX_FADV_NOREUSE 5 /* Data will be accessed once. */
20#endif
21
22#endif /* FADVISE_H_INCLUDED */
23